>However, just as an employer may look at something like commuting time and say to themselves "wow, they're going to commute for 2 hours, that's going to be tough", an employer can look at someone who is older and assume more expenses and say "wow, they might be digging into savings, that's going to be tough".

I think it really boils down to context. If you are a 6 figure developer taking a $40K job, yea, maybe, but if someone is paying $40K for US developers, they don't get to bitch about turnover, that would be a given.

So let's take something more realistic (and I'm framing everything in terms of development, because that's what I know). Say a $150K guy drops down to $100K. To me that isn't a red flag, maybe the guy wants to do something different in a new language. Say a Windows guy wants to do iOS or Linux or vice versa. Unless they are crazy with their money $100K is easy to live on for most people, even as a sole provider with a family.

Another example is they are unemployed and looking for work. A lower paying job is better than no job, so they would already be digging into savings, so I would consider that a moot point. I would imagine that person would be more likely to stick around because they have to dig out of that hole and knows the sting of being unemployed. (It happened to me in 2001 and it sucked.)

It also greatly depends on where you live and what industry you are in. I happen to live in a low cost of living city.